The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 08, 2020
Filed:
Mar. 27, 2014
Continental Automotive Gmbh, Hannover, DE;
Peter-Matthias Russe, Tegernheim, DE;
Hans-Joerg Wiehoff, Regensburg, DE;
VITESCO TECHNOLOGIES GMBH, Hannover, DE;
Abstract
A method for determining the opening energy of a fuel injector of an internal combustion engine includes (a) operating the engine in a steady-state operating state, wherein electrical excitation is applied to the fuel injector to cause a fuel injection in each working cycle of the engine, (b) applying additional electrical excitation to the fuel injector for subsequent working cycle(s) for a possible additional partial fuel injection, wherein the additional electrical excitation is initially insufficient to cause an additional partial fuel injection, (c) successively increasing the additional electrical excitation until an additional partial fuel injection occurs, which brings about a second operating state of the engine different from the steady-state operating state, (d) detection of the second operating state, and (e) determination of the opening energy for the fuel injector based on the energy of the additional electrical excitation needed to bring about the second operating state of the engine.